You’re talking about instinct and experience, not morality.
Fire feels bad therefore I avoid it.
Sex feels good therefore I desire it and pursue it.
Instinct and experience contribute to the understanding of morality and the proliferation of moral acts, but
Instinct is not an adequate basis to evaluate the goodness of an act.
Likewise, “human well being” is a part of the good, and is taken up as part of it, but it is not the objective good. What is good for one human being might be to the detraction of another. That’s not morality, that’s force, or ethics by assertion of power, or domination. It’s the subjugation of one human being to my well being. So while well being is part of it, it’s not the ultimate good.
Since I am talking about Christian morality, let’s observe the ground of it. In the CCC morality is grounded in this context:
LIFE IN CHRIST
MAN’S VOCATION LIFE IN THE SPIRIT
THE DIGNITY OF THE HUMAN PERSON
This is the context of Christian morality. Note that objective good is not grounded necessarily in mere “well being”, prosperity and health and such, but in the unified life of body and spirit, in God. The dignity of the human person is oriented toward vocation of “life in the Spirit”. Vocation is what we are called to. We are called to “life in the Spirit”.
Before you cast this as a dichotomy between “well being” and morality, note that well being is taken up and fulfilled in morality, not cast aside as irrelevant.
The evaluation of human acts has it’s ultimate reference in the good of full life in the Spirit, not in popular consensus, or feelings, or instincts. These things can definitely contribute to our good end, but they are not the ground of it, and they are not ends in themselves. It should be common sense that feelings and popular consensus are not adequate to evaluate human acts. “might does not make right”. Because I feel it for my neighbors wife, doesn’t mean it’s good for me or my neighbors wife. History has proven the tragic consequences of distorted moral assumptions.
So, that is Christian morality.
You are trying to fit morality as a square peg into a round hole.